Auxiliary extensible wing for airplanes



July Z1, 1931. E. A. TURNER I AUXILIARY EXTENSIBLE WING FOR AIRPLANES 2 Sheets-Sheet l July 2l, 1931. E. A. TURNER AUXILIARY EXTENSIBLE WING lFOR AIRPLANES 2 Sheets-Sheet 2 3mm to@ Filed June 10, 1950 Tzarzf .Patentecl July 2l,y 1931` PATENT oFFics l .urinoirA. gmu'nnnaor GRANITEVILLE, MASSACHUSETTS AUXILrARYnXfr-ENSIBLE lWING ronA AIRPLANES yA;illipaaion mesa amie 10,5

L 'Ilhisinventionrelates to airplanes and pariticularly to' auxiliary wings and the general 'object'of the Vinvention 17s to providefan airplane with an auxiliarywinglwhich is norf5; mally contracted or yfolded whenout of use` but which may be expanded/.or projected intoy ak positionfor use at thewill of the pilot. e 'A further object is to provide an auxiliary e wingof this kind mounted upon the fuselage 1 0; and-embodying a plurality of wing sections,

which when unfolded provide a laterally projec'ting wing structure which kmay be used particularly in making .forced landings `,or when the engine is stopped and it is desired l@ to vallow the machine to come to earth gently and to increase the supporting wing surface. Other objectshave to dowith the detailsl of construction and arrangement of parts as will appear more fully hereinafter. n 29;," Myinvention is illustrated in the accom` panying drawings, wherein y Figure 1 is a top plan view ofthe rear porv tion of an-airplane .fuselage showing my invention appli-ed thereto .e n v 25; Figure 2 is a vertical section on a median line of thefuselage showing the means for operating'the extensible auxiliary wings; Figure Sis a rear elevationy of the fuselage showingr the extensible wings spread orex-v 3Ort-ended; j .Y

Figure 4 is a sectional'view through the fuselage Vshowing the wings contracted Figure 5 is a fragmentary endy elevation yshowing the wings partly extended, and 35.- Figure Gis a crosssection throughone of the Sections of the wings. ik e v y Referring to these ydrawings,10 designates v the fuselage which is constructed inany usual or suitable manner and `which" is provided 4vowwith the usual plane 11 adjacent its nose.

The plane is, of. course,' provided with the usual propelling means and steering and controlmeans. v y Mounted upon the fuselageat yany desired 45 Ypoint rearward of the usual 'plane 11 is an auxiliaryL plane consisting of i relative wing sections so mounted that they may be folded up `rin compact form to'ioifer as little air resistanceas possible but which shall be adapt'-` mf ed to beunfolded and laterally projected at `*these linksle as bein T 'ward on n 'each side ofl the; fuselage Y are directly- 1930. serial No. 460,224. the'will ofy the pilot. I have illustrated to thisk end a wing consisting of four sections,` although Iwish it understood that a greater number or less number of sections might be used. The outermost sections of the wing are designated 12 and the innermost sections 13. The outermost sect-ions 12 at their innerendsy arepivotally connected to links 14 which in turn are pivotally kconnected to the fuselagev inany' suitable manner. I have illustrated'y 60S' g pivotally connected to; transverse members 15 mounted yupon the top ofthe fuselage but I do not wish tojbe limited. tothis.

l l @tending upwardthrough the top'of'thex Goa e fuselage are two vertically movable 'posts 16 j andfthe rear endsof the vlateral `members l'ZA ofthe in nerr sections 13 are pivotally connect-v ed to these posts 164by pivots 18, Thelinks let. are also pivotally connected to thesections'l, 795i asatf19. Pivotally-connecting: the outer ends;v

of thesections- 13 to the intermediateportions of the sections 12 are the links20-y The posts:

16 arey supportedwithin the `fuselage -forvertiealqinovement and vany* suitable meansmay; 7% be providedwhereby the pil-ottfcanvertically D shift thesesupporting post-s.v VJhen the supl porting posts 16' areymoved yupwardy to the full exten@y thev wings '12 and 13 ywillffold upon each other andwill take such position ,thatfSQ-t the wingsare extended downward andfouts VVhentV however,v the posts 16 are drawn downward` tot-heir full extent,` the lazy-tongs,y action of andl 2Q and fthe members, 17 which 85%- connected to ythe posts will causey l, thefsectionsl lfand 13 to moveinthe position shown in'Figure 3 and outwardly projectso as tof afford an auxiliary supporting ysurface: for themachine., the auxiliary, wings are projected, ,the sec-k tions12land 13-willbe disposed at-a slight inclination downward and outward and thatfthe l rear end of the sections 12;(.willwslightly:overthe linlrs 14.

lap andbe superposed overy the outer endwof'g? Y the section Preferably, each ,0f thesefsech tions 12- and-13 has/a convexgupper face and aff camber ory concave underfaceso asfgtoisecure kas ,fully as ypossible under-the circumstances usualiplyane., referablythe` e the "aspectof the Itwillbe seen.ithat when outer extremities of the sections 12 and 13 will be beveledlor thinned downward to a relatively sharp curved edge 21.

I do not wish to be limited, however, to the Yparticular detail construction of these auxiliary wings or planes. They may be made of any suitable material such as the usual material from which the wings are madeand will be supported by the longitudinal frames l?" and 17a and by transverse braces or trusses such as are usually found in airplane wings.V

'I his extensible auxiliary wing may be utilized at any time to provide additional supporting surfaces for the plane but is particularly intended for use when-the engine has gone dead and it isdesired to make a landing as gently as possible, in which case the auxiliary plane .or wing may bev extended to thus increase the supporting surface and thus operate in the manner of a parachute. By the use of this auxiliary plane or Wing, a tail spin or a nose spin may be prevented. Many-different means may beuscd for raising or lowering theposts V15. I havel illustrated for this purpose, however, a longitudinally extending shaft extending through the fuselage and having Sat Vone end means whereby the pilot `may actuate the shaft and at the .other Aend having gear wheels 22 Vfor engagement with theracks 23 formed upon the posts. This is purely illustrative, as' any other desirable means might would effect the raising and lowering of the posts at the will of the pilot.

While I have heretofore referred to the fact that the auxiliary wing may be fully contracted or fully expanded, it will be understood that thel pilot may, if he so desires,

only partially expand or extend the auxiliary VUnder these circumstances, the 'wing L wings.

oted to the inner section intermediate itsV l for supporting 'the wing sections for shiftying movement from a position where the wing sections are in upwardly and inwardly inclined planes andin approximate contact with each other to a position where the wing sections are disposed each in an approximately horizontall plane with the wing sections disposed oney beyond theother and in approximate alinement, and manually vcontrolled means for shifting the sectionsfrom one to the other of such positions.

In testimony whereof I hereunto afix my signature.

-ELDON A. TURNER.

be used forV this purpose which y sections will take an intermediate position with the wing sections extended downward and laterally in parallel relation to each other but spaced from each other. Under these circumstances, the auxiliary wings will offer a much less resistance to the downward' movement of tne Vmachine than they would,

e of course, if the auxiliary wings are fully extended in which case the wings are disposed nearly in alinement with each other, the inner ends of the outer wings overlapping andV being only slightly spaced from the outer ends of the inner wings. This means the pilot can, to a degree, control the descent of the machine or control the extension of the Vwings so as to vary the rate of descent.

Having described my invention, what I Y claim is vl. In an airplane having a'fuselage, auxiliary wings, each wing including two sections, the inner section ofeach wing being mounted on the fuselage for vertical movement, links pivotally connected to the inner ends of the outer sections and pivotally connected to the fuselage, said links being' piv- 

